The telemetry header file uses the rte_cpuset_t type, but does not
include any header providing that type. Include rte_os.h to provide the
necessary type.
Fixes: febbebf7f255 ("telemetry: keep threads separate from data plane")
Cc: stable@dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>